Will give brainliest plz answer quick

How many different ways can you make change for $.50 using only nickels,dimes, and quarters?

In triangle opq right angled at p op=7cm,oq-pq=1 determine the values of sinq and cosq

Write a polynomial function f of least degree that has rational coefficients, a leading coefficient of 1, and the given zeros. 3, 4+2i, 1+(sqrt)7 the answer is supposed to be: f(x)=x(^5)-13x(^4)+60x(^3)-82x(^2)-144x+360 what am i doing wrong?